Thanks! I'm not sure if the law would cover in-app purchases by themselves. However, you should be able to sell your used app which could probably include all the in-app purchases.
I don't know if the law requires a mechanism for transfer as much as it requires the software maker not to prevent transfers. So the process could be manual (via email), as long as a process exists. But a mechanism in the software or marketplace would make everyone's lives easier.
I don't know if the law requires a mechanism for transfer as much as it requires the software maker not to prevent transfers. So the process could be manual (via email), as long as a process exists. But a mechanism in the software or marketplace would make everyone's lives easier.